Biofuels crops ‘may speed global warming’

Most crops grown in the US and Europe to make "green" transport fuels actually speed up global warming because of industrial farming methods, says a report by Nobel prize winning chemist Paul J. Crutzen.

Energy crunch: sugar cane is used for ethanol production in Brazil
Energy crunch: sugar cane is used for ethanol production in Brazil
Published 27 September 2007, 22:10Updated 7 October 2016, 07:13
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